Hiding information is a major part of programming: protecting passwords, establishing secure connections, and securing programs against tampering all rely on controlling access to information.

While we won’t be able to really dig into information hiding until after we cover hashes in a later course, we can write a simple program to change a user’s input with the tools we have now: arrays and iterators.


Hit Run to test out our redactor program and to learn how to build your own.

Take this course for free

Mini Info Outline Icon
By signing up for Codecademy, you agree to Codecademy's Terms of Service & Privacy Policy.

Or sign up using:

Already have an account?